Appendix B This section is well structured, but contains certain grammatical and other errors that need to be corrected before the document is presented in final form (see below). In addition, there are a few semantic and "concept" issues that need clarification. Page 61:   Question the use of the title "Governing Equations Using the Traditional Approach." Prefer "Governing Equations in Partial Differential Form" or "Governing Equations of Hydromechanics." Page 61:   The Saint Venant equations are the equations of water continuity and momentum in one dimension, not in two dimensions. Referring to the 2-D system, Cunge mentions that "This system of three equations is analogous to the system derived by de Saint Venant for the flow in one spatial dimension." (See Cunge, J. A., 1975, "Two-dimensional modeling of flood plains," Chapter 17 in Unsteady Flow in Open Channels, K Mahmood and V. Yevjevich, Water Resources Publications). The system in question is properly referred to as the "the system of depth-integrated (two-dimensional) equations for unsteady shallow water flow." It is incorrect to say that this system is "commonly referred to as the Saint Venant equations." However, repeated incorrect usage converts to correct usage (by definition of "usage"). Page 62, paragraph 2:   A diffusion flow formulation does away with circulation in two-dimensional depth-averaged flow (Ponce and Yabusaki, 1980, Modeling circulation in depth-averaged flow," ASCE Journal of the Hydraulics Division, 107, HY11). Therefore, the approximation is only good for 2-D convection-dominated flows. Is this condition applicable to all cases where the RSM will be applied? A warning is appropriate to caution other users of the model, who may try to apply the model to sites where the 2-D flows are not necessarily convection-dominated. Page 63, paragraph 1:   Replace "conveyance can be expresses" with "conveyance can be expressed" Page 63, paragraph 2:   Replace "sub-surface" with "subsurface" Page 63, paragraph 2:   Replace "using many of the methods used to solve parabolic equations" with "using methods applicable to parabolic equations" Page 63, section B.2, paragraph 1:   Replace "object oriented" with "object-oriented" Page 64, section B.3, paragraph 1:   Do not start sentence with "Unless". Reword. Page 64, section B.3, paragraph 1:   Replace "Theies" with "Theis" (misspelling). Page 64, section B.3, paragraph 1:   For completeness, the definition of "internal boundary condition" is missing. Page 64, section B.3, paragraph 3:   Replace "sub-critical" with "subcritical" Page 64, section B.3, paragraph 3:   Last sentence is ackward; rephrase and/or clarify. Page 64, section B.3, paragraph 4:   Replace "shallow water water models" with "shallow-water models" Page 64, section B.3, paragraph 4:   Replace "can also be used as at" with "can also be used at" Page 64, section B.3, paragraph 4:   Replace "specified head" with "specified-head" or "head-specified" Page 64, section B.3, paragraph 4:   Replace "the governing equation used is nonlinear parabolic" with "the system of governing equations is nonlinear and parabolic" Page 64, section B.3, paragraph 4:   Replace "ground water" "groundwater" Page 64, section B.3, paragraph 5:   The correct spelling for Neuman is "Neumann" However, the incorrect spelling has been used in groundwater. Page 65, section B.3, paragraph 5:   Replace "mixed type" with "mixed-type" Page 65, section B.3, paragraph 5:   Replace semi-pervious" with "semipervious" Page 65, paragraph 2:   Consider placing definition of "internal boundary conditions" at the beginning of section B.3. Page 65, section B.4, paragraph 1:   The Saint Venant equations are not commonly referred to as "depth-averaged." Replace "Gradually varied 1-D unsteady flow is explained using the depth averaged equations commonly referred to as Saint Venant equations" with "Gradually varied unsteady 1-D flow is commonly described using the equations of water continuity and momentum attributed to Saint Venant" Page 65, section B.4, paragraph 1:   Is a correction being used to account of the fact that neither rainfall nor ET are being input to the canals? With so many canals in South Florida, is this effect negligible? Page 66, paragraph 1:   Is the last sentence needed? The first sentence of Appendix B states "The PDEs... are not directly used in the RSM." The last sentence says "The finite volume method is not directly based on this differential form..." This appears to be redundant. Need to more clearly explain the tie between the PDE's, needed to check accuracy, and the finite-volume method, needed for the OO modeling. Maybe this explanation belongs in Chapter 2.